JPS6139863B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention utilizes liquid fuels such as kerosene and light oil, or water,
The present invention relates to an atomization device for atomizing medical liquids and the like.

The object is to provide an atomizing device that is simple and compact in structure, is therefore inexpensive, and allows the amount of atomization to be adjusted extremely easily and over a wide range.

Still another object is to provide an atomizing device that can particularly ensure the start of atomizing operation with a simple configuration and ensure stable startup.

Conventional liquid atomization devices include, for example, devices that drop liquid onto a rotating body and atomize it by shaking, or devices that apply pressure to the liquid with a high-pressure pump and spray it at high pressure from a nozzle. , and methods that atomize from the liquid surface using ultrasonic energy from an ultrasonic vibrator have been proposed, but in both cases the devices were large and complex, and were extremely noisy. Moreover, it had to be expensive. Furthermore, it was difficult to control the amount of atomization, making it very inconvenient to use.

The present invention has been made in view of these points, and at least at the time of startup, the liquid level controlled by the liquid level control means is made higher than the nozzle hole, and the pressurized chamber is filled with liquid, and electrical vibration is generated. The liquid in the pressurizing chamber is vibrated by a child and is discharged from the nozzle hole provided facing the pressurizing chamber to atomize the liquid, which is extremely simple, compact, and inexpensive. In addition to being easy to control the atomization amount, it is stable and
The present invention provides an atomization device that can be started reliably.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention, which is applied to a combustion device.

In the figure, reference numeral 1 denotes a case into which combustion air is introduced from an air hole 3 by a fan 2. 4 is a damper device that adjusts the amount of combustion air. Reference numeral 5 denotes a support column, by which the base body 6 is supported. The base body 6 has a cylindrical pressurizing chamber 7 filled with kerosene, and is formed into a horn shape. Further, a nozzle 9 is provided at the tip of the opening 8, and a nozzle hole 10 is provided facing the pressurizing chamber 7. A diaphragm 11 is provided at the bottom of the pressurizing chamber 7.
is provided, and the base body 6 is supported by a cylindrical support 12.
is fixed. The diaphragm 11 has electrodes 13,
14, piezo vibrators 15 and 16 are fixed, and these constitute an electric vibrator. The piezo vibrators 15 and 16 are electrically connected in parallel. Reference numeral 19 denotes an air guide, which plays the role of effectively sending combustion air to a mixing chamber 22 formed by a burner stand 20, a burner 21, and the like.

27 is a tank, a cartridge tank 29
This constitutes a liquid level control means and keeps the liquid level 30 substantially constant.

The controlled liquid level 30 is controlled by the nozzle hole 10.
It is constructed so that it can be maintained at a high position. Therefore, kerosene flows from the tank 27 through the connecting pipe 32 into the pressurizing chamber 7 through the liquid supply port 33, and the pressurizing chamber 7 is filled with kerosene. Since the surface tension of kerosene is generated in the nozzle hole 10, the kerosene does not overflow from the nozzle 10, and therefore the pressurized chamber 7 is filled with kerosene. Filling the pressurized chamber 7 with kerosene before starting the atomization operation in this manner is extremely important in ensuring stable startup of the atomization device, as will be described later.

Reference numeral 35 denotes a control device which internally has an oscillator drive section 37 and a combustion control section 36 as shown in FIG.

The variable resistor 40 is configured to interlock with the shaft 4a of the damper 4, and provides a signal corresponding to the amount of combustion air to the combustion control section 36, and this signal also serves as a signal for controlling the vibrator drive section 37. .

Therefore, the combustion control section 36 controls the oscillator drive section 37 based on the air amount signal from the variable resistor 40 and the signal from the combustion state detector 39, and adjusts the average power to the piezo oscillators 15 and 16. control, and performs optimal atomization amount control.

The piezo oscillators 15 and 16 are vibrated by an AC voltage of 10 to 30 KHg supplied from the oscillator drive unit 37, and the kerosene in the pressurized chamber 7 is discharged from the nozzle hole 10 and atomized due to the distortion caused by the vibration. However, as mentioned above, if the pressurizing chamber 7 is not filled with kerosene and air bubbles remain before the atomization operation, that is, the start of the vibration of the piezo vibrators 15 and 16, the piezo vibrators 15 and 16 The vibrations are absorbed by the bubbles, making it impossible to achieve stable atomization. Once kerosene is filled, the pressure generated by the operation of the fan 2 reverses the pressure relationship between the front and rear of the nozzle hole 10, and even if the pressure inside the pressurizing chamber 7 becomes lower than that of the mixing chamber 22, the pressure of the nozzle hole 10 remains unchanged. Due to the surface tension of kerosene, air will not flow into the pressurized chamber 7.
Therefore, if the pressure chamber 7 is filled with kerosene by raising the liquid level 30 higher than the nozzle hole 10 at least before starting the atomization operation, the air in the pressurization chamber 7 can be exhausted and a reliable The start of atomization can be guaranteed, and a stable kerosene discharge operation from the nozzle hole 10 and a stable kerosene suction operation from the supply port 33 can be realized.

The kerosene atomized from the nozzle hole 10 is sent to the heater 4
The hot air heated by 6 is mixed with the air, and the burner 2
1, and the combustion heat is transferred to the room air sucked in from the suction port 43 by the fan 42 and the heat exchanger 44.
The heat is exchanged by the outer wall and discharged into the room from the outlet 45.

Note that 49 is a speed changeover switch for the fan 42, and 50 is a power source.

As described above, according to the present invention, the nozzle hole is provided facing the pressurized chamber filled with liquid, and the liquid in the pressurized chamber is vibrated with an electric vibrator, and the liquid level is controlled. The liquid level controlled by means,
By configuring the height to rise at least before the start of the atomization operation, the configuration is extremely simple, compact, and therefore low-priced, and the amount of atomization can be easily controlled, as well as ensuring reliable startup and stability. Accordingly, it is possible to provide an atomizing device that can perform an atomizing operation.

In addition, by configuring the nozzle hole 10 to face upward as in the above embodiment, filling of the liquid into the pressurizing chamber 7 at the time of startup can be made more reliable and easier.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the configuration of one embodiment of the present invention;
FIG. 2 is a block diagram of the control section. 6... Base body, 7... Pressure chamber, 10... Nozzle hole, 11, 13, 14, 15, 16... Electric vibrator, 27... Tank (liquid level control means).

Claims (1)

[Scope of Claims] 1. A base body having a pressurized chamber filled with liquid, a nozzle hole provided facing the pressurized chamber, an electric vibrator that vibrates the liquid in the pressurized chamber, and the A liquid level control means is connected to a pressurizing chamber in the base and controls the liquid level to a substantially constant level, and the liquid level control means controls the liquid level to be higher than the nozzle hole at least before the start of the atomization operation. An atomization device configured to do this. 2. The atomization device according to claim 1, wherein the nozzle hole is opened upward.